Siemens SIMATIC Rack PC 840 Manual page 207

Write Protection
Write protection for files or diskettes
S Write protection for files; this type of write protection is stored in the computer
and is allocated by the system manager.
S Floppy disk write protection; for 3 1/2 in. diskettes by opening the write
protection hole.
W2k
Another name for Windows 2000.
SIMATIC Rack PC 840 Manual
A5E00104826-03
Glossary
Glossary-21